oh thank you! the seedling is growing well now. Will update new and better quality pictures soon.
The leaves are having some white dots, but I bet its not some disturbance by insects. Can someone please identify the problem?
It doesn't look like an apple seedling to me. Apples don't have serrated leaves like your seedling.
I had to go and look it up - apples do have serrated leaves, although I agree that this didn't say "apple" to me when I first looked at it. I also looked up "apical meristem" - it is the growing tip.
I would remove that curled-up leaf just in case it is infested with something. I can't see the white bit referred to above because when I click on the images they open huge with poor definition.
I don't know any apples with leaves that serrated https://www.google.com/search?q=apple+leaf&rlz=1C1SVEE_enGB425GB425&espv=210&es_sm=122&tbm=isch&tbo=u&source=univ&sa=X&ei=YEeoUpXPH8iV7AbG0YHYAQ&ved=0CC0QsAQ&biw=910&bih=428
although I'm happy to be proved wrong
I put in "apple seedling" and many look similar to the one in the photos. The illustrations in my books also show varying degrees of serration. Young tree leaves do tend to look different to mature ones - I'm speaking as a botanist, more than as a gardener. But I do agree, I'm not convinced it's an apple. I can't identify it as any common weed, though.
I agree with Landgirl100. It certainly could be an apple seedling and most probably it's a wild apple (Malus sylvestris) or a seedling from a crab apple. Here's a good image of a serrated apple leaf.
and this one as well:
Thank you all. This has to be an apple seedling because I took the seed straight from the fruit itself. Should I prune the leaves at the top because of the white spots?
I'm a little confused.